Device for punching and cutting eyelets



May 11 1926.

W. STUEBING SR DEVICE FOR PUNCHING AND CUTTING EYELETS Filed Feb. 21.1924 2 Sheets-Sheet 1 WJISTLUEBING, SR

DEVICE FOR PUNCHING AND CUTTING EYELETS Filed Feb. 21, 1924 2Sheets-Sheet 2 I3 1 1o- /2 7 8 8 Z2 4-? H 1 4 5 A 5 [I J I 4 I 4 I l 6I] 5 Patented May 11, 1926.

siren STATES rATENr Fries- WILLIAM s'rUEBI c, SR, or CINCINNATI, OHIO.

DEVICE FOR PUNCHING AND CUTTING EYELETS.

Application filed February 21, 1924. Serial No. 694,316.

Usually the punching and eyelet or hang-- or cutting mechanism is builtinto and is part of the machine, see the patent of William Stuebing,S12, machine for mounting metal strips, No. 1,057,295, of March 25th,1913.

Machines of this class are quite complicated and readily get out oforder when the eyelet, or hanger punching and cutting means get out oforder, parts must be. sent to the manufacturer and the machine will beidle until new parts are furnished, or a high class expert mechanic mustbe employed to correct the fault or defect, and the machine ltein idle,time and money are lost.

I overcome these objections by forming the unit punch and cutter asshown in the drawings. Two or three can be kept on hand by the user, andwhen one gets out of order a newone can be slipped in place by almostanyone, consequently the machine is stopped momentarily, and the device,which is out of order, can be returned to the factory and repaired.

The attachment or device is simple, cheap, and highly efficient, and canbe readily placed in position or moved.

In the accompanying drawing forming part of this specification:

Fig. 1, is a side View of the punching and feeding mechanism, with partof the punch operating attachment shown, parts being in section,

Fig. 2, is a top view of the punch and cutting means,

Fig. 3, is a side elevation, partly in section of the complete punchingand cutting unit or device taken on line 3-3 of Fig. 2,

Fig. 4, is an inverted view of punch and upper knife support, partsbeing in section, taken on line 4-4 of 'Fig. 3,

Fig. 5, is a top or plan view of the lower part of the punching andcutting device, showing the lower knife and punching die, and connectingparts, parts being in section, taken on line 55 of Fig. 3,

Fig. 6, is a view in elevation of the complete unit or device,

Fig. 7, is a plan View of the eyelet or hanger, the strip or tape partlytrimmed and punched at one end, and

Fig. 8, is a plan view of a complete eyelet or hanger.

In carrying out my invention, I provide a body consisting of acylindrical lower part 1. and a head 2, generally made integral, thehead being circular and of greater diameter than part 1.

The body parts 1 and 2, are positioned and kept from moving by reason ofscrews 38, see Fig. 2.

Through the parts 1 and 2, I place holes I 3, there being two of saidholes; these holes receive the shafts 4, 4, spaced as shown and areunited at bottom by a clevis bracket 5, the clevis bracket held on theshaft 4, 4, by rea son of nuts 6, 6, which are screw-threaded on thelower ends of said shafts 4.

At the upper end of shafts 4, 4, I place the punch and upper knifesupport 7, which is held to shafts 4 by reason of nuts 8, 8,screwthreaded onto the upper ends of shafts 4, the rear end of thissupport being tapered off at point 9 for clearance.

Through the center of support 7, I placea slot 10, and in the rear endof this "slot I place the cutting knife 12, which is held firmly tosupport 7 by reason of screw 1.3.

This knife is adjustable forwardly and backs wardly in said slot, sothat it will line up with the lower knife.

At the front part of support 7, I place the punch 14, which is held tothe support v7 by reason of a screw 15.

Surrounding the shafts 4, attached to head 2, I place a stripper plate16, which is suitably cut out to allow the'punch and knifeto passthrough without friction.

The stripper plate 16 is rigidly held to the head 2by reason of screws39, see Fig. 5.

In the top of head 2, running forward and backward, I place a slot 17which at the rear inclines to the top surface of head 2, this incline 18lifts the eyelet strips and guides it into the machine in the properposition. Just in front of the rise of the incline and at right anglesto slot 17, I place a slot 19 which receives the lower knife 20,- andthis lower knife has a concave cutting edge which conforms with theconvex edge of the upper cutting knife 12, but may be of any otherdesired shape.

This lower knife 20 is held rigidly in its slot by reason of screws 21.of the lower knife 20 is on the same level or place with the bottom ofslots 17, thus The upper side allowing the same place for the eyeletstrips 22 to pass over.

Near the front and in the slot 17, I place the punch die 23, the topsurface of which being on the same plane as, the bottom of slot 17. Thispunch is held rigidly in the head 2 by reason of a press fit.

A clearance hole 24 passing through part 1, is somewhat larger than thehole in the die 23, thus allowing the punchings to fall out. 7

At the lower end of clevis bracket 5, are two downwardly depending arms25, and form a clevis which receives a link 26, the link being movablyattached to the arms 25 by'reason of a pin 27 passing therethrough. Atthe lower end of link 26, a lever 28 is movably attached by reason ofpin 29, parts of lever 28 being shown broken away.

In Fig. 1, it is plainly seen how the body portion 1 and head portion 2are inserted in a bar 30 on the machine (not shown) the eyelet strip 22passes over and through the roll 31, and roll 32, the roll 32 is helddown on roll 31 by a spring pressure from above (not shown), the eyeletstrip 22 passing be tween said rolls 31 and 32, which feed said strip atpredetermined intervals, said tape or strip then passing through aguiding shoe '33, and then passing into and through slot 17 to be actedupon by the punch and knives which have hole' 34 and cut round edge 35,which completes an eyelet, shown in Fig. 8.

By this continual operation the action is thus: the eyelet strip 22passing through slot 17 to the desired length for the eyelet,

I the lever 28 which is acted on by a cam (not shown), presses-down thelink 26 and this link, in turn, acting on the clevis 5, which isattached to shafts 4, 4, pulls down said shafts, thus pulling down punchand knife support 7, and thus operating said punch and knife upon theeyelet strip, cutting out the eyelet or hanger as soon as the cam nose(not shown), releases. The parts just described move up into normalposition and release the eyelet strip 22, so same may be again fedforward for another operation;

this upward movement is actuated by a 3 spring (not shown).

The steps of cutting or making an eyelet is best shown on Fig. 7. Itwill be seen that one end of this strip 22 has a concave end at 26,which has been cut at same time hole 34 was punched, thus making thedistance from edge 36 and the hole 34 always the same. As the eyeletstrip 22 moves forward for the next operation, the knives 12 and 20 willcut this strip just in back of the holes 34 on dotted line 37, see Fig.7; it will be understood that this dotted line is not printed on thestrip, but is used and shown to describe the operation.

In order to remove the unit or device it is only necessary to take outthe clevis pin 27, and screws 38 in head 2, and pull out the combinedpunching and cutting unit from bar 30.

That part of the eyelet or hanger which is at the concave end 36 isgenerally folded with the material or paper which forms the top of thecalendar, card, or the like.

In this specification I have described one specific form of carrying myinvention into efi'ect, it being the preferred form, however, it will bereadily seen and understood that I may deviate from and change thevarious parts to some extent,said changes and modifications stillfalling within the scope of the specification and claim.

What I claim as new and my invention and desire to secure by LettersPatent is:

In a device of the character described, a

body part carrying a head, said head carrying ache and a lower cuttingknife in combination with shafts passing through said head and body partand capable of upward and downward movement, the shafts at their topcarrying a supporting plate, said plate provided with an upper cuttingknife and a punch, the whole combined as a unit, for attachment to orremoval from a machine.

In testimony whereof, I aflix my signature at Cincinnati, Ohio, this18th day of February, 1924.

'WM. STUEYBING, sR.

